345544273 has 2 divisors, whose sum is σ = 345544274. Its totient is φ = 345544272.

The previous prime is 345544253. The next prime is 345544289. The reversal of 345544273 is 372445543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333902529 + 11641744 = 18273^2 + 3412^2 .

It is a cyclic number.

It is not a de Polignac number, because 345544273 - 2²⁵ = 311989841 is a prime.

It is not a weakly prime, because it can be changed into another prime (345544223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172772136 + 172772137.

It is an arithmetic number, because the mean of its divisors is an integer number (172772137).

Almost surely, 2^345544273 is an apocalyptic number.

It is an amenable number.

345544273 is a deficient number, since it is larger than the sum of its proper divisors (1).

345544273 is an equidigital number, since it uses as much as digits as its factorization.

345544273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 37.

The square root of 345544273 is about 18588.8211837115. The cubic root of 345544273 is about 701.7265359916.

The spelling of 345544273 in words is "three hundred forty-five million, five hundred forty-four thousand, two hundred seventy-three".